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comparison src/ExternalClient-Xlib.c @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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children 8de911beca70
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1 /* External client, raw Xlib version.
2 Copyright (C) 1993, 1994 Sun Microsystems, Inc.
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public
15 License along with this library; if not, write to
16 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
18
19 /* Synched up with: Not in FSF. */
20
21 /* Written by Ben Wing, February 1994. */
22
23 #include <X11/Xlib.h>
24 #include <X11/Xresource.h>
25 #include <X11/Xutil.h>
26 #include "extw-Xlib.h"
27
28 /* this is not a perfect solution, but otherwise we have to include all
29 of the Xt junk */
30
31 #define XtGeometryNo 1
32
33 #if (XlibSpecificationRelease < 5)
34 # define XPointer char *
35 #endif
36
37 static int context_inited;
38 static XContext focus_context;
39
40 /* does the specified window have the focus, given that the pointer just
41 entered (or left) the window (according to enter_p)? This question
42 does not have an obvious answer in X. (Basically, X sucks.) */
43
44 static int
45 window_has_focus_p (Display *display, Window win, int enter_p)
46 {
47 Window focuswin;
48 int dummy;
49
50 XGetInputFocus(display, &focuswin, &dummy);
51 if (focuswin == PointerRoot)
52 return enter_p;
53 if (focuswin == win)
54 return True;
55 if (!enter_p)
56 return False;
57 do
58 {
59 Status st;
60 Window root_win, parent_win;
61 Window *child_win;
62 int nchild;
63
64 st = XQueryTree(display, win, &root_win, &parent_win, &child_win,
65 &nchild);
66 if (!st)
67 return False;
68 XFree((XPointer)child_win);
69 if (parent_win == focuswin)
70 return True;
71 if (parent_win == root_win)
72 return False;
73 win = parent_win;
74 }
75 while (1);
76 }
77
78
79 /* External entry points when using XLib directly */
80
81 void ExternalClientInitialize (Display *display, Window win);
82 void
83 ExternalClientInitialize (Display *display, Window win)
84 {
85 extw_initialize_atoms(display);
86 extw_which_side = extw_client_send;
87 if (!context_inited)
88 {
89 focus_context = XUniqueContext();
90 context_inited = 1;
91 }
92 XSaveContext(display, win, focus_context, 0);
93 XSelectInput(display, win, EnterWindowMask | LeaveWindowMask |
94 FocusChangeMask);
95 }
96
97 void ExternalClientEventHandler (Display *display, Window win, XEvent *event);
98 void
99 ExternalClientEventHandler (Display *display, Window win, XEvent *event)
100 {
101 if (win != event->xany.window)
102 return;
103
104 if (event->type == ClientMessage &&
105 event->xclient.message_type == a_EXTW_NOTIFY &&
106 event->xclient.data.l[0] == extw_shell_send)
107 switch (event->xclient.data.l[1]) {
108 case extw_notify_gm:
109 /* for the moment, just refuse geometry requests. */
110 extw_send_notify_3(display, win, extw_notify_gm, XtGeometryNo, 0, 0);
111 break;
112
113 case extw_notify_init:
114 extw_send_notify_3(display, win, extw_notify_init, EXTW_TYPE_XLIB, 0, 0);
115 break;
116
117 case extw_notify_end:
118 XClearArea(display, win, 0, 0, 0, 0, True);
119 break;
120 }
121 else
122 {
123 int focus_status;
124 XPointer current_focus;
125
126 if (event->type == FocusIn)
127 focus_status = 1;
128 else if (event->type == FocusOut)
129 focus_status = 0;
130 else if (event->type == EnterNotify &&
131 event->xcrossing.detail != NotifyInferior)
132 focus_status = window_has_focus_p(display, win, 1);
133 else if (event->type == LeaveNotify &&
134 event->xcrossing.detail != NotifyInferior)
135 focus_status = window_has_focus_p(display, win, 0);
136 else
137 return;
138 XFindContext(display, win, focus_context, &current_focus);
139 if (focus_status != (int) current_focus)
140 {
141 XSaveContext(display, win, focus_context, (XPointer) focus_status);
142 extw_send_notify_3(display, win, focus_status ?
143 extw_notify_focus_in : extw_notify_focus_out,
144 0, 0, 0);
145 }
146 }
147 }